Respuesta :
The change was made by Abraham Lincoln because he saw the way slaves were treated by the south and which created a further reason for the union in the war
Answer:
Civil War.
Explanation:
When Abraham Lincoln was elect in 1860 the southern states raged. Differences between North and South were bigger with that event, because Republicans had a anti-slavery policy.
The main Lincoln's purpose was to unify North and South in a strong Nation, powerful and independent. But, they saw that this goal was impossible to achieve if they don't finished slavery. With that abolishment, North and South had no longer differences.
